#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
int main()
{
	int i = 0;
	scanf("%d", &i);
	switch (i)
	{
	case 2:
		printf("case 2:%d\n", i);
	case 1:
		printf("case 1:%d\n", i);
	default:
		break;
	}
	return 0;
}